[INFO] crate dynparser 0.4.2 is already in cache
[INFO] extracting crate dynparser 0.4.2 into work/ex/clippy-test-run/sources/stable/reg/dynparser/0.4.2
[INFO] extracting crate dynparser 0.4.2 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/dynparser/0.4.2
[INFO] validating manifest of dynparser-0.4.2 on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of dynparser-0.4.2 on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing dynparser-0.4.2
[INFO] finished frobbing dynparser-0.4.2
[INFO] frobbed toml for dynparser-0.4.2 written to work/ex/clippy-test-run/sources/stable/reg/dynparser/0.4.2/Cargo.toml
[INFO] started frobbing dynparser-0.4.2
[INFO] finished frobbing dynparser-0.4.2
[INFO] frobbed toml for dynparser-0.4.2 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/dynparser/0.4.2/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting dynparser-0.4.2 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-4/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/dynparser/0.4.2:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 4bf1bf94241c45b9f356eda4f0438c12baf54179d8a6fae6a1a9a71e26cdf64a
[INFO] running `"docker" "start" "-a" "4bf1bf94241c45b9f356eda4f0438c12baf54179d8a6fae6a1a9a71e26cdf64a"`
[INFO] [stderr]     Checking idata v0.1.0
[INFO] [stderr]     Checking dynparser v0.4.2 (/opt/crater/workdir)
[INFO] [stderr] warning: lint name `let_and_return` is deprecated and may not have an effect in the future. Also `cfg_attr(cargo-clippy)` won't be necessary anymore
[INFO] [stderr]    --> src/lib.rs:137:44
[INFO] [stderr]     |
[INFO] [stderr] 137 | #[cfg_attr(feature = "cargo-clippy", allow(let_and_return))]
[INFO] [stderr]     |                                            ^^^^^^^^^^^^^^ help: change it to: `clippy::let_and_return`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(renamed_and_removed_lints)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/lib.rs:145:9
[INFO] [stderr]     |
[INFO] [stderr] 145 |           rules
[INFO] [stderr]     |           ^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/peg/rules.rs:4:3
[INFO] [stderr]     |
[INFO] [stderr] 4   | /   rules!(
[INFO] [stderr] 5   | |          r#"_1"# => or!(lit!(" "), ref_rule!(r#"eol"#))
[INFO] [stderr] 6   | |        , r#"parenth"# => or!(and!(lit!("("), ref_rule!(r#"_"#), ref_rule!(r#"expr"#), ref_rule!(r#"_"#), lit!(")")), and!(lit!("("), ref_rule!(r#"_"#), ref_rule!(r#"expr"#), ref_rule!(r#"_"#), error!("unbalanced parethesis: missing ')'")))
[INFO] [stderr] 7   | |        , r#"module"# => and!(ref_rule!(r#"_"#), ref_rule!(r#"mod_name"#), ref_rule!(r#"_"#), lit!("{"), ref_rule!(r#"_"#), ref_rule!(r#"grammar"#), ref_rule!(r#"_"#), lit!("}"))
[INFO] [stderr] ...   |
[INFO] [stderr] 37  | |        , r#"lit_esc"# => and!(ref_rule!(r#"_""#), rep!(or!(ref_rule!(r#"esc_char"#), ref_rule!(r#"hex_char"#), and!(not!(ref_rule!(r#"_""#)), dot!())), 0), ref_rule!(r#"_""#))
[INFO] [stderr] 38  | |   )
[INFO] [stderr]     | |___- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::let_and_return)] on by default
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/lib.rs:144:23
[INFO] [stderr]     |
[INFO] [stderr] 144 |           $(let rules = rules.add($n, $e);)*
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/peg/rules.rs:4:3
[INFO] [stderr]     |
[INFO] [stderr] 4   | /   rules!(
[INFO] [stderr] 5   | |          r#"_1"# => or!(lit!(" "), ref_rule!(r#"eol"#))
[INFO] [stderr] 6   | |        , r#"parenth"# => or!(and!(lit!("("), ref_rule!(r#"_"#), ref_rule!(r#"expr"#), ref_rule!(r#"_"#), lit!(")")), and!(lit!("("), ref_rule!(r#"_"#), ref_rule!(r#"expr"#), ref_rule!(r#"_"#), error!("unbalanced parethesis: missing ')'")))
[INFO] [stderr] 7   | |        , r#"module"# => and!(ref_rule!(r#"_"#), ref_rule!(r#"mod_name"#), ref_rule!(r#"_"#), lit!("{"), ref_rule!(r#"_"#), ref_rule!(r#"grammar"#), ref_rule!(r#"_"#), lit!("}"))
[INFO] [stderr] ...   |
[INFO] [stderr] 37  | |        , r#"lit_esc"# => and!(ref_rule!(r#"_""#), rep!(or!(ref_rule!(r#"esc_char"#), ref_rule!(r#"hex_char"#), and!(not!(ref_rule!(r#"_""#)), dot!())), 0), ref_rule!(r#"_""#))
[INFO] [stderr] 38  | |   )
[INFO] [stderr]     | |___- in this macro invocation
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/lib.rs:145:9
[INFO] [stderr]     |
[INFO] [stderr] 145 |         rules
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/peg/mod.rs:228:27
[INFO] [stderr]     |
[INFO] [stderr] 228 |         rec_consume_rules(rules!(), &nodes)
[INFO] [stderr]     |                           -------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/lib.rs:143:21
[INFO] [stderr]     |
[INFO] [stderr] 143 |         let rules = expression::SetOfRules::new(HashMap::<String, expression::Expression>::new());
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/peg/mod.rs:228:27
[INFO] [stderr]     |
[INFO] [stderr] 228 |         rec_consume_rules(rules!(), &nodes)
[INFO] [stderr]     |                           -------- in this macro invocation
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: lint name `let_and_return` is deprecated and may not have an effect in the future. Also `cfg_attr(cargo-clippy)` won't be necessary anymore
[INFO] [stderr]    --> src/lib.rs:137:44
[INFO] [stderr]     |
[INFO] [stderr] 137 | #[cfg_attr(feature = "cargo-clippy", allow(let_and_return))]
[INFO] [stderr]     |                                            ^^^^^^^^^^^^^^ help: change it to: `clippy::let_and_return`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(renamed_and_removed_lints)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/lib.rs:145:9
[INFO] [stderr]     |
[INFO] [stderr] 145 |         rules
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/atom/test.rs:11:17
[INFO] [stderr]     |
[INFO] [stderr] 11  |     let rules = rules!{};
[INFO] [stderr]     |                 -------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::let_and_return)] on by default
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/lib.rs:143:21
[INFO] [stderr]     |
[INFO] [stderr] 143 |         let rules = expression::SetOfRules::new(HashMap::<String, expression::Expression>::new());
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/atom/test.rs:11:17
[INFO] [stderr]     |
[INFO] [stderr] 11  |     let rules = rules!{};
[INFO] [stderr]     |                 -------- in this macro invocation
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/lib.rs:145:9
[INFO] [stderr]     |
[INFO] [stderr] 145 |         rules
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/atom/test.rs:22:17
[INFO] [stderr]     |
[INFO] [stderr] 22  |     let rules = rules!{};
[INFO] [stderr]     |                 -------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/lib.rs:143:21
[INFO] [stderr]     |
[INFO] [stderr] 143 |         let rules = expression::SetOfRules::new(HashMap::<String, expression::Expression>::new());
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/atom/test.rs:22:17
[INFO] [stderr]     |
[INFO] [stderr] 22  |     let rules = rules!{};
[INFO] [stderr]     |                 -------- in this macro invocation
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/lib.rs:145:9
[INFO] [stderr]     |
[INFO] [stderr] 145 |         rules
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/atom/test.rs:33:17
[INFO] [stderr]     |
[INFO] [stderr] 33  |     let rules = rules!{};
[INFO] [stderr]     |                 -------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/lib.rs:143:21
[INFO] [stderr]     |
[INFO] [stderr] 143 |         let rules = expression::SetOfRules::new(HashMap::<String, expression::Expression>::new());
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/atom/test.rs:33:17
[INFO] [stderr]     |
[INFO] [stderr] 33  |     let rules = rules!{};
[INFO] [stderr]     |                 -------- in this macro invocation
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/lib.rs:145:9
[INFO] [stderr]     |
[INFO] [stderr] 145 |         rules
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/atom/test.rs:40:17
[INFO] [stderr]     |
[INFO] [stderr] 40  |     let rules = rules!{};
[INFO] [stderr]     |                 -------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/lib.rs:143:21
[INFO] [stderr]     |
[INFO] [stderr] 143 |         let rules = expression::SetOfRules::new(HashMap::<String, expression::Expression>::new());
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/atom/test.rs:40:17
[INFO] [stderr]     |
[INFO] [stderr] 40  |     let rules = rules!{};
[INFO] [stderr]     |                 -------- in this macro invocation
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/lib.rs:145:9
[INFO] [stderr]     |
[INFO] [stderr] 145 |         rules
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/atom/test.rs:47:17
[INFO] [stderr]     |
[INFO] [stderr] 47  |     let rules = rules!{};
[INFO] [stderr]     |                 -------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/lib.rs:143:21
[INFO] [stderr]     |
[INFO] [stderr] 143 |         let rules = expression::SetOfRules::new(HashMap::<String, expression::Expression>::new());
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/atom/test.rs:47:17
[INFO] [stderr]     |
[INFO] [stderr] 47  |     let rules = rules!{};
[INFO] [stderr]     |                 -------- in this macro invocation
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/lib.rs:145:9
[INFO] [stderr]     |
[INFO] [stderr] 145 |         rules
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/atom/test.rs:54:17
[INFO] [stderr]     |
[INFO] [stderr] 54  |     let rules = rules!{};
[INFO] [stderr]     |                 -------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/lib.rs:143:21
[INFO] [stderr]     |
[INFO] [stderr] 143 |         let rules = expression::SetOfRules::new(HashMap::<String, expression::Expression>::new());
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/atom/test.rs:54:17
[INFO] [stderr]     |
[INFO] [stderr] 54  |     let rules = rules!{};
[INFO] [stderr]     |                 -------- in this macro invocation
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/lib.rs:145:9
[INFO] [stderr]     |
[INFO] [stderr] 145 |         rules
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/atom/test.rs:73:17
[INFO] [stderr]     |
[INFO] [stderr] 73  |     let rules = rules!{};
[INFO] [stderr]     |                 -------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/lib.rs:143:21
[INFO] [stderr]     |
[INFO] [stderr] 143 |         let rules = expression::SetOfRules::new(HashMap::<String, expression::Expression>::new());
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/atom/test.rs:73:17
[INFO] [stderr]     |
[INFO] [stderr] 73  |     let rules = rules!{};
[INFO] [stderr]     |                 -------- in this macro invocation
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/lib.rs:145:9
[INFO] [stderr]     |
[INFO] [stderr] 145 |         rules
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/atom/test.rs:91:17
[INFO] [stderr]     |
[INFO] [stderr] 91  |     let rules = rules!{};
[INFO] [stderr]     |                 -------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/lib.rs:143:21
[INFO] [stderr]     |
[INFO] [stderr] 143 |         let rules = expression::SetOfRules::new(HashMap::<String, expression::Expression>::new());
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/atom/test.rs:91:17
[INFO] [stderr]     |
[INFO] [stderr] 91  |     let rules = rules!{};
[INFO] [stderr]     |                 -------- in this macro invocation
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/lib.rs:145:9
[INFO] [stderr]     |
[INFO] [stderr] 145 |         rules
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/atom/test.rs:113:17
[INFO] [stderr]     |
[INFO] [stderr] 113 |     let rules = rules!{};
[INFO] [stderr]     |                 -------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/lib.rs:143:21
[INFO] [stderr]     |
[INFO] [stderr] 143 |         let rules = expression::SetOfRules::new(HashMap::<String, expression::Expression>::new());
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/atom/test.rs:113:17
[INFO] [stderr]     |
[INFO] [stderr] 113 |     let rules = rules!{};
[INFO] [stderr]     |                 -------- in this macro invocation
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/lib.rs:145:9
[INFO] [stderr]     |
[INFO] [stderr] 145 |         rules
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/atom/test.rs:128:17
[INFO] [stderr]     |
[INFO] [stderr] 128 |     let rules = rules!{};
[INFO] [stderr]     |                 -------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/lib.rs:143:21
[INFO] [stderr]     |
[INFO] [stderr] 143 |         let rules = expression::SetOfRules::new(HashMap::<String, expression::Expression>::new());
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/atom/test.rs:128:17
[INFO] [stderr]     |
[INFO] [stderr] 128 |     let rules = rules!{};
[INFO] [stderr]     |                 -------- in this macro invocation
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/lib.rs:145:9
[INFO] [stderr]     |
[INFO] [stderr] 145 |         rules
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/atom/test.rs:139:17
[INFO] [stderr]     |
[INFO] [stderr] 139 |     let rules = rules!{};
[INFO] [stderr]     |                 -------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/lib.rs:143:21
[INFO] [stderr]     |
[INFO] [stderr] 143 |         let rules = expression::SetOfRules::new(HashMap::<String, expression::Expression>::new());
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/atom/test.rs:139:17
[INFO] [stderr]     |
[INFO] [stderr] 139 |     let rules = rules!{};
[INFO] [stderr]     |                 -------- in this macro invocation
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/lib.rs:145:9
[INFO] [stderr]     |
[INFO] [stderr] 145 |         rules
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/expression/test.rs:12:17
[INFO] [stderr]     |
[INFO] [stderr] 12  |     let rules = rules!{};
[INFO] [stderr]     |                 -------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/lib.rs:143:21
[INFO] [stderr]     |
[INFO] [stderr] 143 |         let rules = expression::SetOfRules::new(HashMap::<String, expression::Expression>::new());
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/expression/test.rs:12:17
[INFO] [stderr]     |
[INFO] [stderr] 12  |     let rules = rules!{};
[INFO] [stderr]     |                 -------- in this macro invocation
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/lib.rs:145:9
[INFO] [stderr]     |
[INFO] [stderr] 145 |         rules
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/expression/test.rs:24:17
[INFO] [stderr]     |
[INFO] [stderr] 24  |     let rules = rules!{};
[INFO] [stderr]     |                 -------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/lib.rs:143:21
[INFO] [stderr]     |
[INFO] [stderr] 143 |         let rules = expression::SetOfRules::new(HashMap::<String, expression::Expression>::new());
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/expression/test.rs:24:17
[INFO] [stderr]     |
[INFO] [stderr] 24  |     let rules = rules!{};
[INFO] [stderr]     |                 -------- in this macro invocation
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/lib.rs:145:9
[INFO] [stderr]     |
[INFO] [stderr] 145 |         rules
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/expression/test.rs:32:17
[INFO] [stderr]     |
[INFO] [stderr] 32  |     let rules = rules!{};
[INFO] [stderr]     |                 -------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/lib.rs:143:21
[INFO] [stderr]     |
[INFO] [stderr] 143 |         let rules = expression::SetOfRules::new(HashMap::<String, expression::Expression>::new());
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/expression/test.rs:32:17
[INFO] [stderr]     |
[INFO] [stderr] 32  |     let rules = rules!{};
[INFO] [stderr]     |                 -------- in this macro invocation
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/lib.rs:145:9
[INFO] [stderr]     |
[INFO] [stderr] 145 |         rules
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/expression/test.rs:49:17
[INFO] [stderr]     |
[INFO] [stderr] 49  |     let rules = rules!{};
[INFO] [stderr]     |                 -------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/lib.rs:143:21
[INFO] [stderr]     |
[INFO] [stderr] 143 |         let rules = expression::SetOfRules::new(HashMap::<String, expression::Expression>::new());
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/expression/test.rs:49:17
[INFO] [stderr]     |
[INFO] [stderr] 49  |     let rules = rules!{};
[INFO] [stderr]     |                 -------- in this macro invocation
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/lib.rs:145:9
[INFO] [stderr]     |
[INFO] [stderr] 145 |         rules
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/expression/test.rs:62:17
[INFO] [stderr]     |
[INFO] [stderr] 62  |     let rules = rules!{};
[INFO] [stderr]     |                 -------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/lib.rs:143:21
[INFO] [stderr]     |
[INFO] [stderr] 143 |         let rules = expression::SetOfRules::new(HashMap::<String, expression::Expression>::new());
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/expression/test.rs:62:17
[INFO] [stderr]     |
[INFO] [stderr] 62  |     let rules = rules!{};
[INFO] [stderr]     |                 -------- in this macro invocation
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/lib.rs:145:9
[INFO] [stderr]     |
[INFO] [stderr] 145 |         rules
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/expression/test.rs:77:17
[INFO] [stderr]     |
[INFO] [stderr] 77  |     let rules = rules!{};
[INFO] [stderr]     |                 -------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/lib.rs:143:21
[INFO] [stderr]     |
[INFO] [stderr] 143 |         let rules = expression::SetOfRules::new(HashMap::<String, expression::Expression>::new());
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/expression/test.rs:77:17
[INFO] [stderr]     |
[INFO] [stderr] 77  |     let rules = rules!{};
[INFO] [stderr]     |                 -------- in this macro invocation
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/lib.rs:145:9
[INFO] [stderr]     |
[INFO] [stderr] 145 |         rules
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/expression/test.rs:88:17
[INFO] [stderr]     |
[INFO] [stderr] 88  |     let rules = rules!{};
[INFO] [stderr]     |                 -------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/lib.rs:143:21
[INFO] [stderr]     |
[INFO] [stderr] 143 |         let rules = expression::SetOfRules::new(HashMap::<String, expression::Expression>::new());
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/expression/test.rs:88:17
[INFO] [stderr]     |
[INFO] [stderr] 88  |     let rules = rules!{};
[INFO] [stderr]     |                 -------- in this macro invocation
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/lib.rs:145:9
[INFO] [stderr]     |
[INFO] [stderr] 145 |         rules
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/expression/test.rs:135:17
[INFO] [stderr]     |
[INFO] [stderr] 135 |     let rules = rules!{};
[INFO] [stderr]     |                 -------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/lib.rs:143:21
[INFO] [stderr]     |
[INFO] [stderr] 143 |         let rules = expression::SetOfRules::new(HashMap::<String, expression::Expression>::new());
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/expression/test.rs:135:17
[INFO] [stderr]     |
[INFO] [stderr] 135 |     let rules = rules!{};
[INFO] [stderr]     |                 -------- in this macro invocation
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/lib.rs:145:9
[INFO] [stderr]     |
[INFO] [stderr] 145 |         rules
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/expression/test.rs:148:17
[INFO] [stderr]     |
[INFO] [stderr] 148 |     let rules = rules!{};
[INFO] [stderr]     |                 -------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/lib.rs:143:21
[INFO] [stderr]     |
[INFO] [stderr] 143 |         let rules = expression::SetOfRules::new(HashMap::<String, expression::Expression>::new());
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/expression/test.rs:148:17
[INFO] [stderr]     |
[INFO] [stderr] 148 |     let rules = rules!{};
[INFO] [stderr]     |                 -------- in this macro invocation
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/lib.rs:145:9
[INFO] [stderr]     |
[INFO] [stderr] 145 |         rules
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/expression/test.rs:206:17
[INFO] [stderr]     |
[INFO] [stderr] 206 |     let rules = rules!{};
[INFO] [stderr]     |                 -------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/lib.rs:143:21
[INFO] [stderr]     |
[INFO] [stderr] 143 |         let rules = expression::SetOfRules::new(HashMap::<String, expression::Expression>::new());
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/expression/test.rs:206:17
[INFO] [stderr]     |
[INFO] [stderr] 206 |     let rules = rules!{};
[INFO] [stderr]     |                 -------- in this macro invocation
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/lib.rs:145:9
[INFO] [stderr]     |
[INFO] [stderr] 145 |         rules
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/test.rs:11:17
[INFO] [stderr]     |
[INFO] [stderr] 11  |     let rules = rules!{"main" => lit!("aaa")};
[INFO] [stderr]     |                 ----------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/lib.rs:144:23
[INFO] [stderr]     |
[INFO] [stderr] 144 |         $(let rules = rules.add($n, $e);)*
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/test.rs:11:17
[INFO] [stderr]     |
[INFO] [stderr] 11  |     let rules = rules!{"main" => lit!("aaa")};
[INFO] [stderr]     |                 ----------------------------- in this macro invocation
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/lib.rs:145:9
[INFO] [stderr]     |
[INFO] [stderr] 145 |         rules
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/test.rs:22:17
[INFO] [stderr]     |
[INFO] [stderr] 22  |     let rules = rules!{"main" => and![lit!("aa"), and![lit!("bb"), lit!("cc")]]};
[INFO] [stderr]     |                 ---------------------------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/lib.rs:144:23
[INFO] [stderr]     |
[INFO] [stderr] 144 |         $(let rules = rules.add($n, $e);)*
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/test.rs:22:17
[INFO] [stderr]     |
[INFO] [stderr] 22  |     let rules = rules!{"main" => and![lit!("aa"), and![lit!("bb"), lit!("cc")]]};
[INFO] [stderr]     |                 ---------------------------------------------------------------- in this macro invocation
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/lib.rs:145:9
[INFO] [stderr]     |
[INFO] [stderr] 145 |         rules
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/test.rs:33:17
[INFO] [stderr]     |
[INFO] [stderr] 33  |     let rules = rules!{"main" => or![lit!("bb"), and![lit!("aa"), lit!("bb")]]};
[INFO] [stderr]     |                 --------------------------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/lib.rs:144:23
[INFO] [stderr]     |
[INFO] [stderr] 144 |         $(let rules = rules.add($n, $e);)*
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/test.rs:33:17
[INFO] [stderr]     |
[INFO] [stderr] 33  |     let rules = rules!{"main" => or![lit!("bb"), and![lit!("aa"), lit!("bb")]]};
[INFO] [stderr]     |                 --------------------------------------------------------------- in this macro invocation
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/lib.rs:145:9
[INFO] [stderr]     |
[INFO] [stderr] 145 |         rules
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/test.rs:44:17
[INFO] [stderr]     |
[INFO] [stderr] 44  |     let rules = rules!{"main" => not!(lit!("bb"))};
[INFO] [stderr]     |                 ---------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/lib.rs:144:23
[INFO] [stderr]     |
[INFO] [stderr] 144 |         $(let rules = rules.add($n, $e);)*
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/test.rs:44:17
[INFO] [stderr]     |
[INFO] [stderr] 44  |     let rules = rules!{"main" => not!(lit!("bb"))};
[INFO] [stderr]     |                 ---------------------------------- in this macro invocation
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/lib.rs:145:9
[INFO] [stderr]     |
[INFO] [stderr] 145 |         rules
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/test.rs:55:17
[INFO] [stderr]     |
[INFO] [stderr] 55  |     let rules = rules!{"main" => rep![lit!("aa"), 3]};
[INFO] [stderr]     |                 ------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/lib.rs:144:23
[INFO] [stderr]     |
[INFO] [stderr] 144 |         $(let rules = rules.add($n, $e);)*
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/test.rs:55:17
[INFO] [stderr]     |
[INFO] [stderr] 55  |     let rules = rules!{"main" => rep![lit!("aa"), 3]};
[INFO] [stderr]     |                 ------------------------------------- in this macro invocation
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/lib.rs:145:9
[INFO] [stderr]     |
[INFO] [stderr] 145 |           rules
[INFO] [stderr]     |           ^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/peg/rules.rs:4:3
[INFO] [stderr]     |
[INFO] [stderr] 4   | /   rules!(
[INFO] [stderr] 5   | |          r#"_1"# => or!(lit!(" "), ref_rule!(r#"eol"#))
[INFO] [stderr] 6   | |        , r#"parenth"# => or!(and!(lit!("("), ref_rule!(r#"_"#), ref_rule!(r#"expr"#), ref_rule!(r#"_"#), lit!(")")), and!(lit!("("), ref_rule!(r#"_"#), ref_rule!(r#"expr"#), ref_rule!(r#"_"#), error!("unbalanced parethesis: missing ')'")))
[INFO] [stderr] 7   | |        , r#"module"# => and!(ref_rule!(r#"_"#), ref_rule!(r#"mod_name"#), ref_rule!(r#"_"#), lit!("{"), ref_rule!(r#"_"#), ref_rule!(r#"grammar"#), ref_rule!(r#"_"#), lit!("}"))
[INFO] [stderr] ...   |
[INFO] [stderr] 37  | |        , r#"lit_esc"# => and!(ref_rule!(r#"_""#), rep!(or!(ref_rule!(r#"esc_char"#), ref_rule!(r#"hex_char"#), and!(not!(ref_rule!(r#"_""#)), dot!())), 0), ref_rule!(r#"_""#))
[INFO] [stderr] 38  | |   )
[INFO] [stderr]     | |___- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/lib.rs:144:23
[INFO] [stderr]     |
[INFO] [stderr] 144 |           $(let rules = rules.add($n, $e);)*
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/peg/rules.rs:4:3
[INFO] [stderr]     |
[INFO] [stderr] 4   | /   rules!(
[INFO] [stderr] 5   | |          r#"_1"# => or!(lit!(" "), ref_rule!(r#"eol"#))
[INFO] [stderr] 6   | |        , r#"parenth"# => or!(and!(lit!("("), ref_rule!(r#"_"#), ref_rule!(r#"expr"#), ref_rule!(r#"_"#), lit!(")")), and!(lit!("("), ref_rule!(r#"_"#), ref_rule!(r#"expr"#), ref_rule!(r#"_"#), error!("unbalanced parethesis: missing ')'")))
[INFO] [stderr] 7   | |        , r#"module"# => and!(ref_rule!(r#"_"#), ref_rule!(r#"mod_name"#), ref_rule!(r#"_"#), lit!("{"), ref_rule!(r#"_"#), ref_rule!(r#"grammar"#), ref_rule!(r#"_"#), lit!("}"))
[INFO] [stderr] ...   |
[INFO] [stderr] 37  | |        , r#"lit_esc"# => and!(ref_rule!(r#"_""#), rep!(or!(ref_rule!(r#"esc_char"#), ref_rule!(r#"hex_char"#), and!(not!(ref_rule!(r#"_""#)), dot!())), 0), ref_rule!(r#"_""#))
[INFO] [stderr] 38  | |   )
[INFO] [stderr]     | |___- in this macro invocation
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/lib.rs:145:9
[INFO] [stderr]     |
[INFO] [stderr] 145 |         rules
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/peg/mod.rs:228:27
[INFO] [stderr]     |
[INFO] [stderr] 228 |         rec_consume_rules(rules!(), &nodes)
[INFO] [stderr]     |                           -------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/lib.rs:143:21
[INFO] [stderr]     |
[INFO] [stderr] 143 |         let rules = expression::SetOfRules::new(HashMap::<String, expression::Expression>::new());
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/peg/mod.rs:228:27
[INFO] [stderr]     |
[INFO] [stderr] 228 |         rec_consume_rules(rules!(), &nodes)
[INFO] [stderr]     |                           -------- in this macro invocation
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.72s
[INFO] running `"docker" "inspect" "4bf1bf94241c45b9f356eda4f0438c12baf54179d8a6fae6a1a9a71e26cdf64a"`
[INFO] running `"docker" "rm" "-f" "4bf1bf94241c45b9f356eda4f0438c12baf54179d8a6fae6a1a9a71e26cdf64a"`
[INFO] [stdout] 4bf1bf94241c45b9f356eda4f0438c12baf54179d8a6fae6a1a9a71e26cdf64a